Machine for removing rubber hose from mandrels.



No. 890,578. PATENTED JUNE 9, 1908.

' S. J. SILL. I MACHINE FOR REMOVING RUBBER HOSE PROM MANDRBLS.

APPLICATION FILED JAN. 8, 1908.

2 SHEETS-SHEET l.

No. 890,578. PATENTED JUNE 9, 1908.

- s1 J. SILL. MACHINE FOR REMOVING RUBBER HOSE PROM MANDRBLS.

APPLICATION FILED JAN. 8, 1908.

2 SHEETS-SHEET 2.

kEA

the vulcanizing operation,

. When the mandrel, with the canizer, the hose UNITED STATES PATENT oEEIoE.

SAMUEL J. SI'LL, or BUFFALO, NEW

Yo K, ASSIGNOR or ONE-HALF T HE seem a. Eat-rm,

OF BUFFALO, NEW YORK.

Macrame FonnEMovme RUBBER Hose FROM MANDRELS.

Specification of Letters Patent.

' Patented June 9, 1908.

Application filed January 8, I908. Qerial No. 409,772.

To aZZ wh0m itmwy concern:

vBe it known that I, SAMUEL J. SILL, a citizen of the United States, and'a resident of the city of Buffalo, county of Erie, State of New York, have invented'certain new-and .useful Improvements in Machines for Removing Rubber Hose from Mandrels, of which I do declare the'followin to be a full,

clear, and exact description, re erence being had to the accompanying drawings, forming part of this specification.

In subjecting a section of rubber hose to it is mounted upon a mandrel. hose-thereon, is withdrawn from the vulit is found that the rubber lining of adheres more or less tenaciously to the mandrel, so that the removal of the hose, without impairing the rubber lining, is apt to a hose section mounted thereon,

be attended with considerable difficulty.

The object of the present invention is to' provide improved'means for loosening the' rubber I hose from the mandrel so that the hose can be readily removed therefrom.

To this end, the invention-consists in the novel mechanismhereinafter described, illustrated in the accompanyin drawings and particularly pointed out in tie claims at the end of thisspecification.

Figure 1;-1s a front view of a machine embodying my invention. Fig. 2is an end view thereof. Fig. 3 is a plan view with the parts shown in section on the line 3 -3 of Fig. 1. Figs. 4 and 5 are cross sections on lines 44 and 55 respectively of Figs. 1 and 3. Fig. 6 is a detail section ofthe operating cylinder. Fig. 7 is a view of-a vulcanizing mandrel with The bed-plate 1 of the machine is supported'upon suitable legs 2 at the ends there-' of. In an opening in the bed-plate l-are mounted a pairof bottom or driving rolls 3- and 4, these'rolls being journaled in suitable bearings. As shown, the bed-plate is formed with recesses 5 to receive the ournals-at the outer ends of the rolls 3 and-4 and the journals at the opposite ends of these rolls are .mounted in similar recesses of the bed-plate.

.' Over the journals at the. outer ends of-the that are bolted as at8 bottom'rolls 3 and .4 sit the bearing caps 7 to the bed-plate,.and the journals at the opposite ends ofthe rolls are retained in placeb similar bearing'ca s that are bolted tothe ed-plate; Upon t e inner ends of the rolls-3'and 4 are keyed the mounted the drive ton 61 within the air. cylinder 55.

gear wheels 11 and 12 that mesh with a gear wheel 13 (see Fig. 5) that is mounted upon an intermediate shaft 14. This shaft 14 is journale d in bearings 15 and 16 beneath the bed-plate 1 of the machine, these hearings being preferably formed in part by the cavities 17 on the underside of the bed-plate and in part'by the bearing caps 19 and 20 that i are bolted asat 2 1 and 22, respectively, to the-underside of the bed-plate. Upon the intermediate shaft 14 is keyed a-gear wheel 25 that meshes with a pinion 26 keyed on the main drive shaft'27. This main drive shaft is mounted in suitable bearings 28 and 29 at the lower ends of brackets 30 and 31 that are bolted to the underside of the bed-plate 1. The outer end of the drive shaft 27 is journaled in a goose-necked bracket 32 that is bolted as at 33 to theend of the bed-plate 1, and upon this drive shaft 27 is loosely ulley 34' having fixed thereto a clutch mem er 35 adapted to mesh with a corresponding clutch member 36 that is splined upon the drive shaft'27 so as to be moved into and out of engagement withthe member 35. The clutch member 36 is formed with an annular groove 38 to receive studs projecting from the yoke-shaped lower end of the; clutch lever 40 that is pivotally mounted as at 4111 on a bracket 42 projecting from the eric. of the machine, the upper end'of this lever forming ahandle thatextends within easy reach of the operator.. It will readily be understood that by means of the clutch lever the drive shaft 27 can be quickly thrown into and out of engagement with the drive pulley 34 that will have rotation imparted thereto from a suitable source of power.

From the top of the bed-plate 1 rise the yoke-shaped standards or brackets 50, the flanged lower ends of which are bolted to the top of the bed-plate as at 51, and across the tops of these standards extends the yoke 52;

. the upper or top roll 70. is

" ranged threads or ribs is to'crowd or squeeze the hose lengthwise upon the vulcanizing effectively loosen the hose from the mandrel.

upon the bottom or driving rolls 3 and 4, the

' throw the drive 'shaft 27 into gear with the der has at one side thereof a valve chamber 6% containing a valve of any suitable eonstruction for controlling the passage of air to the opposite ends of the cylinder and from this valve extends a stem that is fitted with a hand-lever 66. A pipe 67 for compressed air or other motive fluid leads to the valve chamber 64.

T o-the lower end of the piston rod 'is pivotally connected a yoke 68, to the outer ends of which yoke are secured the bearingblocks 69 in which are journaled the ends of the top roll 70. The bearing-blocks 69 are mounted to slide within the guideways 71 of the standards or brackets 50. By pivotally mountingthe yoke 68 to the lower end of the piston rod 60, a rocking motion is allowed to this yoke and to the roll 7.0 in'order to more uniformly distribute the pressure of the rollthroughout its length. Each half of rovided with reversey arranged spiral rigs or threads 71 and 72, the faces of. these ribsor threads being rounded to avoid the cutting of the surface of the hose upon which the to roll will bear. The purpose of the reverse y armandrel whereon it will be mounted, and thus effect the loosening of the rubber hose from the mandrel, and I prefer the reverse arrangement of the ribs or threads 71 and 72, as, iri practice, this has been found to most At the base of the standards or brackets 50 are bolted as at the guides or plates 81 against which will bear the ends of the mandrel whereon the hose is mounted to hold the same against the endwise movement.

In Fig. 7 of the drawings there is shown a vulcanizing mandrel 87 between the fixed which is mounted. a-section of hose 88 and when it is desired to loosen the hose section from the surface of the mandrel, the mandrel, with the hose thereon, will be placed ends of the mandrel extending between the guides or plates 81. The operator, by shifting the hand-lever 6.6, will cause compressed air to pass to the top of the cylinder 55,; thereby forcing the top roll 70 down on to the surface of thehose 88. The operator will then shift the clutch lever 4.0 so as to drive pulley 34, and, by so drdng, will cause rotation to be imparted to the bottom' or drive rolls 3 and 4. The friction between the drive rolls 3 and 4 and the h ose will cause the latter to revolve and the pressure of the spiral ribs or threads 7] and 72 ofthe top I roll 70 will crowd the rubber lengthwise and, preferably, from. the ends towards the center construction above set out may be varied without departure from the @scope ofthe invention. Certain features ofthe invention above described correspondto featuresof construc tion described and claimed in an application for improvements in hoseinaking machines filed by me of even date herewith, and I do not wish to be understood'as claiming herein such features of construction as are claimed in the companion; application.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is 1. A machine of the character described, comprising a plurality of rolls between which a mandrel with a hose thereon may be mounted and meansfor'imparting revolution to said rolls, one of saidiolls being provided with ribs or projecting portions adapted to crowd the hose lengthwise on its mandrel so as to loosen-ittherefrom,

2. A machineof the character described, comprising a plurality of rolls between which amandrel with a hose thereon may be mounted 'and means forv impartin revolution to said rolls, one of said rolls eing provided with reve'rsely arranged ribs or projections for crowding the hose lengthwise of its mandrel to loosen it therefrom;

3. Amachine of the character described, comprising a plurality of rolls between which a mandrel with a hose thereon may be mounted, means for imparting revolution to said rolls, one of said-rollsbeing provided with ribs or projecting portionsa'dapted to crowd the hose lengthwise on its mandrel so as to loosen it therefrom, anda pivoted yoke for sustaining said last mentioned roll.

4. Ainachine of the character described,

driving said rolls, a top or pressure roll having its surface provided with projections for crowding lengthwise the hose upon its'manf drel and means for raising and lowering said top or pressure roll.

SA MUEL J. SILL, lVitnesses .llAR-RY L. OLAPP, KATHARINE- GERLACH.

comprising a pair of bottom rolls, means for 

